A.大桥建成通车后,渡口是否关闭。
B.各种车的收费标准。
C.平均每天进入该岛的车流量。
D.大客车与小汽车占车流量的比例。
E.进口车与国产车占车流量的比例。
It was in the winter of 1951 ______ a heavy fog moved into London.
A.that
B.then
C.when
D.空
1951年底到1952年春,中国共产党在党政机构工作人员中开展的运动是()。
A.肃反运动
B.整风、整党运动
C.“三反”运动
D.“五反”运动
1951年底到1952年春,中国共产党在党政机构工作人员中开展运动的内容是()。
A.反主观主义、反宗派主义、反党八股
B.反主观主义、反保守主义、反官僚主义
C.反贪污、反行贿、反盗窃经济情报
D.反贪污、反浪费、反官僚主义
Passage Five
A young girl and a man were recently found murdered in a parked car in a Boston suburb. The police found no clue (线索) in the car. Then they found a witness who had seen a car pass by the murdered couple's car. He said it was a 1950 or 1951 Chevrolet (雪佛莱牌汽车).
Ordinarily, searching through the files for owners of elderly Chevies would have been an impossibly difficult task because there were two and a half million such cars. In this case, however, the police had a powerful tool--the computer.
The Boston Registry of Motor Vehicles programmed its computer to screen all 1950 and 1951 Chevrolets within a fifteen-mile radius (半径) of the suburb--the area in which the police believed the murderer was most likely to be found. Within minutes, the computer uncovered one thousand of the wanted cars. A few hours of careful hand screening turned up a 1950 Chevrolet owner who lived close to the scene of the crime and who had received many traffic tickets (交通罚款). He was among the first suspects to be investigated, and evidence linking him to the murdered couple was found. He was arrested, and is now waiting for trial (审判).
51. The computer DIDN'T help the police ______.
A. to find the suspect
B. to find the murdered couple
C. to arrest the suspect
D. to search a 1950 or 1951 Chevrolet